Reid sought to reverse the political momentum that has turned against a use-of-force resolution in recent days by warning that the United States would face future condemnation failing to act.

“Millions and millions of civilians and prisoners of war were murdered by gas in Nazi death camps, Treblink, Auschwitz. ‘Never again,’ swore the world. ‘Never again would we permit the use of these poisonous weapons of war,’” he said on the Senate floor.